Exhibiting device.



H. D. SGHROEDER. vBXHIBITING DEVICE. APPLIGATION FILED SEPT. Z9. 1913.

Patented Dec. 15, 1914.

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THE NORRIS PETERS C0.. PHDTCLLITHO., WASHINGTON. D. C.

H. D. SUHROBDBR.

BXHIBITING DEVICE.

APPLICATION FILED sEPT 29,191a.

1 120,982. Patented Deo. 15, 1914.

3 SHEETS-SHEET 2.

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25"/ 96 jjj H. D. SGHROEDBR.

EXHIBITING DEVICE.

APPLICATION FILED SEPT. 29, 1913.

1,120,982. Panteane. 15, 1914.

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' HERMAN D. SCI-ZIIIEtOEDIE'R,y OF IOS `ANG'IELES, CALIFORNIA.

`Exiiiiarriim ijEvicn y rApplica(aan'niet'september as, i913. 'serial No. 792,312.'

To all whom t may concern:

Be it known ythat I, HERMAN D. Soiiizon- DER, a citizen of the United States,-residing at Los Angeles, in the county of Los Angeles and Stateof California, have inventeda lnew. and useful Exhibiting Device, of ywhichthe following is a specification. Y n f f' 7 This invention relates to a device forexhibiting advertisements, pictures, etc., and the main object ofthe invention is to provide for a large exhibiting 'capacity ina comparatively small andfcoinpact machine;

A further object of the inventionisfto prop vide'an exhibitingdevice in which the time of exhibition ofeac'h"pictureor advertise- 'y ment may be controlled independently"` of the speed of operationof the machine.

Other obj ectsof the invention willappear The accompanying4 drawings `illustrate an -v embodiment of my invention, and referring l p" thereto:

l ing` device.

Figure i is a. front eievaapnof the' exhibit:

in Fig. 1. Fig. is a sectionon lineaia'a4 in Fig. 3. Fig. 5y is a section on lineas- Yr5 in Fig. 3. Fig. 6`is a 'sectionon line 6`w6 in Fig. 2. Fig. 7 is a rear `elevation of the exhibiting device, 'the inclosing case being shown in section. Fig. Sis a diagram of the circuit 'connections Fig, 9.y is a section :on

line -minFig. 7 Fig. 10 is a section on linelO-mlo in Fig. y7. Figll' isa section, on line mum11 in Fig. 7. F1g.'12 is adetail elevation of the controlling'gear fo'rdeter-i mining they period of reversal. Fig. 13 a section4 on line mls-w1? `in Fig-7. Fig. 14 is a section on line m1fl-MinFig7. Fig'.

y 15vis a section on line einem in Fig.y 111. Fig. 16 is a section on line' mls-m16 in Fig. 14:.

The exhibiting deviceisy inclosed in a case 1 and lmounted inl a vframe 2, which preferably consists of anglebars 3 riveted to-v gether to form front and rearv rectangular frames which are connected'A together at' top and bottom by plates 5, 6l and 74 rivetedl to saidangle bars. Plates' and 7 arelsecured to a lbase8.' The exhibiting curtain 9 is mounted on upper and lower `curtain yrollers 10 and 11, and slides over guiderolls`29fon frame 2, said curtain"lbeingfremovably attached to the rollersby rings 9 in the curtain engaging hooks 1'01. in therollers. 4 The l v inclosing ,case 1`,formed-preferablyL of` sheet Fig. 2 is atransverse section, thereof, on line @a-m2 in Fig. 1. Fig. 31s a transverse section thereof on line mal-w3.

metal, is adaptedto lslidefverti'cally over the frame2` aforesaid, so as tocompletely ,inf closethe mechanism at top, front, rrear and sidesf$aid inclosing case is formed at its frontwith an opening provided'with a pane .Lof glass or other suitable material, through which a portion ofthe curtain orexliibiting means9 is exposedto view. Reflectors 24a are providedat the top andbottom ofsaid opening in the frontof the v`cas'e,fand electric lamps 24 are provided within said reflectors,

`so that the light froni'said lamps is reflected ontov the exhibiting means, reflecting sur faces 24T being also provided, extending obliquely inward from said lamps to throw the 'lov light onto ythe lower and upper portions of y .thei'pictura with 'greater` intensitythan on the middle portion thereof. Saidcase isy further provided with flanges 30 extending to"- ward the exhibiting curtain to aid in guiding the same. The plates r5 at the'top vof the frame 1 are formed with bearings for ycurtain roller 10. A suitableforinof bearing is shown in 6, each ofthe plates 5 being formed of two sheet fmetal 'parts L 5 riveted together and having lopposite openings `12 l`rrabbete'd or,

flangedas shown lat13gto form annularball `v races-for balls 14 engaging in anannular groove 16in a'hub 17 mounted to rotate with the roller 10.- Toifacilitate assemblage of they parts the roller 10 is: made separatefrom the y hubs 17 and Iis providedin one endwith perforations18 for 'receiving alpinr 19 on a disk 20 CarliedbyV the''corresponding .hubV 17,

The sheet'metal parts 5 are assembled with the balls 14 and hub 17 before the said parts 5"v are rivetedY together, andthe roller 10 is brought-into `position between the opposite the machine frame. A `shaft 21 extends through the roller 10 and the yli-ubs'17 there.- of and 'carries .the kbox `or casing-22y for a spring 23, saidqspring being secured at one hub 17 vso as tcresiliently connect 21 and the roller 10. W

said shaft vrThe lower roller 11 is provided at one end with astud 25- en`gaging in a socket 26 ina bearing member 27 rotatably mounted ina ball bearingl '28 in a 'plate '28p constructed similarlyv tov theabove described plates 5,;but removably securedto the frame ofthe inachine. .For this purpose the removable platek 28"may be secured to thefiixed gplate '6 by `hubs`f17 when the plates are being secured to l ,endto'said box andatthe` other' end to the means of a `screw`31on thev plate, extending i.

- through a perforation 32 in the plate 28 and Cil a nut 33 screwing on said screw. lHooks 34 on said plate 6 extend through notches 35 1n said plate 28 and engage over said plate kto hold same in position at its top. At its other end Ythe roller 11 is provided `with a hole 37 for receiving a bearing pin 38 rotatably mounted in a ball bearing 39 in frame plate 7 and in a ball bearing 40 in a frame plate4 41 mounted on the base v8 of the machine.` v A disk-44 on said-bearing member 38 is provided with a pin 45 engaging in a recess 46 in the end of roller 11, so as to cause said roller to turn with said bearing member. By means of this construction the lower roller is rendered readily removable, it being only necessary to unscrew the nut 33, remove the plate 28 and then withdraw the. roller endwise from the bearing member 38., i

The tworollerslO and 11 are` operated simultaneously from `an operating shaft 48 mounted in bearings 49 on a frame plate 50 secured to vertical bars 51 on therear frame member aforesaid, said shaft 48 carrying two sprocket wheels 54 and 55 connected rei spectively by sprocket chains 56k and`57 to sprocket wheels 58 and 59 on the lrespective upper and lower rollers. lVheel 55 also opera-tesV as a cam wheel, as hereinafter set forth. v

Y. Operating'shaft 48 is driven from a motor 'y 60 by` any suitable connection, for example,

by a screw 61 operated by the motor and engaging a worm gear62 on a shaft 63 mount* ed to rotate on the machine frame and carrying a screw 64 engaging a worm wheel 65 on said shaft 48. A clutch is provided between the shaft 69 of the motor 60and the operating screw 61 aforesaid, said clutch comprising disks or cones 68, 68', secured to the respective members 69 .and 61, clutch member 68 being splined to the motor shaft so as toturn therewith, andjbeing provided with an annular neck 70 engaged iby a con# .trolling leverl 71, and with a spring 72 tendi ing to close said clutch.

In order to provide for compactn'essl ,of the device, together with capacityfor eX- hibiting large pictures or signs, I provide means whereby the curtain rollers 10 and 11 may be given a plurality of rotations at each exhibiting operation, thereby enabling small rollers to be used. For this purpose controlling devices are provided for the motor 60, comprising a switch 73 and a controller for said switch 73 operated, for eX- ample, at every alternate rotation lof the shaft 48,;` Switch 73 comprisesa lever 7 4 of insulating material pivotally mounted at 75 and carrying contact means adapted to control the circuit of the motor as hereinafter pressure on said spring 7 9 so as to tend to throwthe switch lever 74 in-.one direction or the other, from a central position. A link V81 is connected to said switch lever and to toggle, and a pin 76 is provided at the knuckle of thisk toggle, to. engage detent means as hereinafter set forth.

A rod 90 pivotally connected to one end of lever.85 slides in a bracket 89 on a bar 89.v which is slidably mounted in a guide block 91 and carries a Vroller 92 adapted to engage in a semi-circular notch 93 in a flange 94 onthe wheel 55 on the shaft 48. A spring 86 is interposed between members 89 and 90 tending to spread them apart. A cam projection 95 on said wheel 55 engages a roller 96 on a slide 97 whichl is slidably mounted in a guide block 98. A member 110 is slidably mounted in said slide 97, and carries a roller, 99 engaging an inclined face 100 on a member 101 suspended from and pivoted at 102 to a rocking lever 103. A spring 111 engages `said members 97 and 110,:to spread the same apart. A spring catch 114 on block`98 is adapted to engage lat its lower end to a head 106. Said head 106 is split andembraces a sleeve 107 which extends fthrough the upper head 108 of `a dash pot cylinder 109, and is provided at its lower end with a piston 112, perforated at 113, and with a; shoulder 107 onlwhich rests i a floating disk 115, which when the piston is descending, f closes the 4perforations 113. Said 'sleeve ismperforated laterally as shown at V11,6 and the head 106 is provided with a downwardly extending rod'117 which serves to close said perforations 116 more or less to providelfor regulation of the rapidity of action ofithe dash pot. Thesleeve 107 is adjusted relatively to the rod 117 by loosening a clamp screw 118 which binds the split head 106 on said sleeve, sliding the sleeve within the head and thun tightening the screw 118(v i ff The'member V101 above referred to operates between the roller 99 and controlling lever 85, andactsl asa spacer or intermediate l. block for y .determining the v Operation Aof said controlling lever by the slidel member or bar 97. The linkl 84 connected to lever` 85v is provided with an upwardly extending spring catch having an inturned ledge or shoulder 121 adapted lto engage a pinor projection 122 on thelever 103 aforesaid, so as to lock the member 101 in lowered position. Lever 103 is-operated in opposition to its restoring weight 104 by an operating rod 124 slidably mounted iny an opening 125 in a bracket` 126 on a lever 103 and pivotally connected at its lower end at 127 to a gear wheel 128 whose shaft 129 is mounted *in a fixed bearing 130 on the frame 50. A spring 132 is provided between the bracket 126 aforesaid and a collar 133 which is adjustably fastened on the rod 124 by a screw 134. The gear wheel 128 on shaft 129 engages a gear wheel 137 on the operating shaft 48 aforesaid, said gear wheel 137 being proportioned relatively to gear wheel 128 so as to'drive the shaft 129 at one-half the rotative speed of the shaft48, so that an upward movement of the vlever 103 and a.

downward movement of the member 101 is secured at each alternate rotation ofy zthe cam wheel55. Wheel 137 is connected to shaft 48 by a lost motion connection, said wheel having a notch 137 in its hub in which engages a member 48 on shaft-48, so that shaft 48, when 1 it reverses its motion will turn through a certain angle before it picksup and carries around the wheel 137." Shaft 129 also carries a screw 140 engaging a. worm wheel 141 rotatably on a ystud shaft 142 on -a bracket v143 extending over the shaft 48. Worm wheel 141 is provided with an annular series of perforations 144, see Fig.

12, yadapted to receive two pins 145 and 146,

the position of these pins in the series of perforations determining the number of pictures or signs that will be exhibited. A retaining plate 147 extends over the worm wheel 141 so as to retain the said pins in position, said disk being held in position by the screw 148. A reversing member 150 is slidably mounted on a pin151 on the frame 50, said member 150 having Aa slot 152 slidably engaging said pin, one endrofsaid member 150 having la lateral projection 153V extending into the path of movement of the pins 145 and 146 aforesaid, so as to cause the said member 150 to bemoved in one direction or the other by engagement of said-pins with said projections, and the other'end of said member 150 being pivoted at 154 to the reversing lever 80 aforesaid for the lelectric switch.

Means are provided yfor lockingthe electric switch in open position while the picture is being exhibited, said means consisting of a pair of detents or hooks for engaging the pin `76 on toggle 74,181,y said hooks being formed on a bar 161 mounted to slide vertically onpins 162 onframeO, said barhaving vertical slots 163 slidably engaging said, pins. A spring y165 isconnected to one ofysaid pins and'` engages a flange or projection 166 on the bar :61 so as to tend to raise said bar., Thelever 103 is provided with a projection or shoulder 167I adapted to yengage said 4projection 166, so asy todepress the detent devicesj160aforesaid,

The switch 73 is preferably `constructed asshowniin Figs. 14 to 16 and comprises rear and front ,plates 170 andv 171 of insulating material, and spacerplates 172 also of `in` sulating material, forming la segmental chamber 173 in which` the switch leverk 74 works, the pivot 75 for said switchvlever being at the apex of the fsegment.` `Metal strips 175, 17 6, 177 y and 1,78 are rmountediny said insulating plate r171 and metallstrips` 175, 176", `177 and 178 on plate`170, said j members 175, 175, being exposed on the in-y side of the plate 170'f`and 171 at the mid width thereof and membersv176, 176, 177,

177 178 and l178 beingexposedat the inside faces kof the plates 170 and 171 only at each {side'of the mid width. Inthecase of the front plate, these strips ,exten'd'concentrically with the ypivotal center ,of the switch and thesame istrue for the strips'175and 176 `c n the rear plate, but the strips 177 and` 1781on the rear plate cross one another as shown in .F ig. 15, so as to provide forfreversal; The switch lever 73 `is provided with contact pins ormembers 180,

181, 182 and 183 extending through ."per- K forations insaid switch rlever and `pressed apart byy springs 184 so as to cause them to engage with the contact members 175,]etc.

`The circuit connections are as follows: The wires 190, 191, of `any suitable supply circuit are connected to contact springs 192, 193, mounted lon an insulating block 194 on the inclosingcase 1, an extracontact spring 195being`-` provided on block 194 for ythe purpose' hereinafter set forth. Contact springs 196, 197 and 198 are mounted on an insulating block 199 on the machineframe 2 and adapted4 to engage respectively with thefcontacts 192,193and 195 when the case is slipped vover the machine frame as shown in Fig. 7. v A ,wire 200 leads from contact 196 to contacts 175, 176, of. switch 73. Wire 201 leads from contact175 ofl-switchi73` to the lamp orlamps 24 andthence tocontact 1,98, .Contact 195 which engagescontaet 198 is connected to contact193, `and-@circuit wirey 191. Contact 176 of switch73 is connected lby wire 203 to one coil 204offthemotor tactspring 19T.

vThe operation is as follows: The curtain 9 is aiiixed to rollers 10 and 11, for example, by a detachable connection such as above described, and the pins 145 and 146 are placed on the wheel 141 so that the number of perforations between said pins corresponds to the number of pictures or signs carried by the curtain. Assuming that the parts are vin the position shown 'in Fig. 7, the motor circuit is closed as follows: from line wire 190 through contacts 192, 196, wire 200, switch contact 17 6, switch pin 181, contact 176 wire 203, motor field coil 204, wire 205, switch contacts 177 and 178, wire 207, armature 206, wire 209, switch contacts 177, 178, wire 211, motor field coil 204, 'wire 2,10 and contacts 197 and 193 to line vwire 191. Current passing in this circuit energizes the motor as a series motor and causes the shaft 63 thereof to rotate. Assuming that at this time the roller 92 is running on the un-notched part of the flange 94 of the cam wheel 55, the clutchv member 68 is held in engagement with clutch member 68, so that the screw 61 is rotated by the motor, thereby rotating shafts 63and 48. Through the gears 137, 128, shaft 129 is also rotated, causing the rod 124 to be raised, bringing the spring 132 thereon against the bracket126 on lever 103 and raising the counter-weighted end of said lever and the dash pot piston connected thereto. This upward movement of thedash pot piston is unrestrained, the diskjll resting on the shoulder 107 and falling away from the perforations 113 in the piston 112, so that liquid may pass readily from the space below the piston through the perfor-ations 113 to the space above the piston. This movement of the controlling lever 103 also allows the detent member 161 to rise and causesthe member 101 to descend, bringing the lower part of said member 101 between the roller 94 and the lever 85. As the member 101 descends in this manner the projection 122 on the adjacent end of lever 103 snaps under shoulder 121 of spring catch 120 and locks member 101 down, thereby locking the controlling lever 103 in position with its weighted end raised. At thistime the cam`9 has passed the roller 96 in its first turn, and the inclined face on the member 101 presses the roller 99, carrier 110, slide 97 and roller 95 back until roller 95 presses on the flat part of cam wheel 55, .and then compresses the spring 111 until the pin 119 on carrier 110 snaps under spring catch 114, thereby locking the roller 99 in retracted position. ln the second rotation of the cam wheel 55, the cam member 95 thereon comes into engagement with the roller 96 on the slide 97, compressing spring 111 until the inclined faces 114, 97 on members 114 and 97 engage -to lift the spring catch 114 from the pin 119 and free the carrier 110 from roller 99, whereupon roller 99 engages member 101and throws lever 85 back, resulting in endwise movement `of link 84,. so as to slide the spring catch 120 spring 83 on the bell crank' 82 in such man` ner as toquickly raisefthe arm of said bell crank connected to link 81, and jerk or snap the toggle, composed of link v81 and lever 74ftowarddead center position, the pin'76 at the knuckle of the toggle snapping over one of the hooks 160 and said hook arresting the return movement of the toggle, which tends to result from the action of the spring 79 in position of the reversing means shown in the drawing. The described operation of lever 85 by cam 95 causes spring 86 to be compressed, and as soon as notch 93 in flange 94 becomes beneath roller 92 said roller snaps into said notch and allows clutch 71 to be operated by spring 86 so as to open the clutch andl release the notch from the transmission gearing, spring 92 when compressed as above stated being stronger than the clutch closing spring 72. The `movement of the switch lever 74 toward central position as above described,

" line wire 190 through contacts 192, 196, wire 200,`contacts 175, 180, 17 5, wire 201 through the lamp or lamps 24 and contacts 198 and 195, to wire 191. The above described operation, therefore brings the curtain winding mechanism to rest and is sov timed that a -sign or picture will then be exhibited through the opening in the case and the picture so exhibited -is illuminated by the lamp or lamps 24. g

The moment that `the controlling lever is released as above described by sliding the spring catch 120 from over detent 1-22, it begins to descend under theactionof weight 104, this descent being resisted and retarded by the actionof the dash pot, the disk 115 at this time coming against the piston 112 and closing the perforations 113 so that the liquid can only pass through the bore of sleeve 107 and` through the perforations 116 in said sleeve, said perforations being relatively small and being closed to rany desired extent by the rod 117,so as to retard the passage of liquidtherethrough. By this means the time of descent of the dash pot piston may be controlled independently of the speed of operation of the motive devices and the time of exhibition of each picture correspondinglyy controlled, As the dash pot piston descends in this manner, thev conl trolling lever 103 eventually reachesa positionk in which the projection167 thereof strikes projection 166 on the detent bar- 161, thereby removing lthe hook 160 aforesaid from the pin 76 and allowingthe switch lever 711 to be thrown back tok closed position shown in Fig. 7, by the action of springs 79 and 90, it being understood that clutch lever 71 and allows {clutch spring 72 to close the clutch, puttingthe-inotor k in operative connectionwitli the transmission gearing,

. operates lever 71 to ymove roller 92;, out of notch 98 in iiange 9,4 of cam wheel555 so that the said wheel 'and kconnected partsf,

V The operation ofshaft 18 as above de4 start another rotation,

cribed causes the rollers 10and 11 to turn,

so as to. wind the curtain 9, 0E of one of said rollers and yon tothe other, the spring 28 for roller 10 allowing -a certain amount of differential movement required by lthe Variation vin eective diameters of the rollers than would bei/required byy a frame for the as the curtain vwinds off or on therollers.

.verse direction, `fore wound in the reverse direction, 4the op-k erationproceeding yin other. respectsfas above described. vIn this Ireversing o eration thek In each ydouble rotation of shaft 48, as above described, `thescrew14i-0 is` turned one revolution and advances the' worm gearltl a distance corresponding to one of the holes 144. This operation yis repeated for each' picture or sign on thel curtain until .theA last one is reached. Pinf145 on wheel 14:1, then strikes reversing member150 and .shifts the. ulcrum member 80 so as to move the fulcrum of spring 79.to `the other side of the dead center with respect to the pivot` ofu switch lever 74. In the next insuing foperation of the toggle-81, 7,4 bythe bell. crank.

82, the action oispring 7 9 urges the toggle'v past the dead center position and' cau'ses it 'to come to rest with pin 76 in engagement i "gives a strong'illui'nination of the VJforeground f and background as compared with the middle distance, making the Jrfore'ground promis with the other hook 160.v This causes the motor circuitb to be closed in a reverse direction with respect to the armature circuit,

the contacts 177 and 178 beingA reversed at this side, so .that vthe motor runs in tli`e`re and the curtain yis therey lost motion connection 48f,`13 yabove `described, causes thev lwheel 128 for operating rod 19A to be operatedonly inv the secondy rotation of the cam wheelk')A and'thusin Jsures that the full movement of the `curtain will be provided for; This is necessary for the reason that the controlling lmeans 95, 97 above describedre'quires a lcertain leeway',` of .movement relative to the reve` rsi ve'del.` vices in orderto insure a full vmovementfotv the curtain in either direction.y

One advantage of the'` presen 79 and 90 to openthefswitch. The

and at the saine'time the spring 72 t invention is,

out of circuit rwhile the curtain ,is arrested, `and the periodici such arrest being deter- "mined. by means independentv of the motor, 'namely, tlie Adash pot. By this means I am enabled to use'a motorl such `as a univer-v sal motor, adapted for eitheralternating `or .direct current work, but not capable of receivingalternatingy current for more lthan a; short' time,l` on account of the heating.

Moreover, by this co'nstructionithe period'of exhibition of each pictureor signy may be 1 adjusted,g`by adjustmentof the'dash pot piston, yindependently *of the speed of the motor.`

notheradvantage of theexhibiting def vice above fdescribed isthat'it takes up yno more rooii'i than'is yrequired for the `curtain and the winding roller s,'the operating mechanisin being located wholly within vthe'space between the rollers and beliindthe curtain.

T lie device is'intended particularly Ator large pictures andsign's andlby reducing the `rollers to the smallest possible size and having the operatingymechanism, between the *rollers, the structure occupies little more space picture or sign.

Byunwindingthe'curtain from the upper roller, releasing it Afromgsaid upper roller by removing ring 9 from hook 10` and `then removing `plate 28, the roller maybe ywithdrawn from the .'machine, with the curtain llower portions thereof. This is particularly desirable .in yexhibiting pictures, since --it nent and giving the eifect ofsky illumination at thebaclrground, and givingdepth to the picture.k

' -WhatI claim is: i

1., An exhibiting device comprising acurtain,` rollers on` .which the curtain is wound, an electric motor,zaiinechanic'al connection yfor .operating said yrollers :tromsaid motor, a reversing switch for said motor, operating means yfor said switch connected to be operatedgby's'aid motor, to open said switch at definite positionsin the travel lof said `cur- 'tain,gmeans tendingto move' saidvswitch to 'closedfpositiom vmeans for retaining said ioo iis

switch in openpositiom a controlling means for said switch retainingv means, tending to move to position to release said switch,

:meansoperated by the motor for moving Veo tion, means for retarding and timing said controlling means away from such posi-` the switch releasing movement of said controlling means, reversing means .for changing the operation of said operating means on said switch, to move the switch to reversed position, and mechanism operated by the mechanical connection between said rollers and said motor to operate said reversing means after a predetermined number of operationsof said switch. y

2. An exhibiting device comprising a curtain, rollers on which the curtain is wound,

an electric motor, gearing connecting said i motor to said rollers, a'cam operated by the aforesaid gearing, a switch for said motor, switch operating means operated by said cam for moving theswitch to open position,

means for retaining the switch in open position, a controlling means .tending to move to position to release said switch retaining" means, means for operating saidv controlling means away from such releasing position by saidmotor, means for locking said controlling means in operated position, said l0cking means being adapted'to'be released by operation of said switch operating means, and means for retarding and timing the return movement ofvsaid controlling means,A

to determine the period of arrest of 'said motor.

3. An exhibiting device comprising a cur-v tain, rollers on which said curtain is wound, an electric motor, mechanical connections including a clutch for operating said rollers by said motor, a reversing switch for said motor, reversing means, and a spring connected thereto and operating on said switch to tend to move the switch-toclosed position in either direction, according to the position of the reversed means, operating means for opening said switch, a cam operated by said mechanical connections for operating said operating means, clutch open` ing means operated by said operating means, a rotary member connected to said mechanical connections, and stop means engaging with said rotary member to arrest the curtain in definite position, said stop means being connected to saidclutch to time the opening thereof by said clutch opening means, simultaneously `with the arrest of the curtain, and means controlled by the operation of an electric motor for operating said reversing switch after a predetermined number of operations of the motor.

4. An exhibiting device comprising a curtain, rollers on which the curtain is wound,

an electric motor, gearing connecting said' motor to said rollers, acam operated by the aforesaid gearing, a switch for said motor,

switch operating means operated by said cam for moving the switch to open position, stop means for said gearing, connected' to said switch operated means to stop the gear- `said motor,

ing simultaneously with the opening of the switch, means for retaining the switchY in open position, a controlling means tending to moveto position to release said switch retaining means, means for operating said controlling means away from such releasing position by said motor, means for locking said controlling means in operated position, said locking meansbeing adapted to be released' by operation of `said switch operati ing means, v:and means for. retarding and timing the return movement of said controlling means, lto Vdetermine the period of arrest of said motor. l

5. An exhibiting device comprising a cur; tain, rollers on which said curtain is wound,

anfelectric motor, mechanical connections for. operating said curtain in either direction byI said motor, a reversing switch for said motor, a reversing device, aspring connected thereto and operating on said switch to tend to move said switch to closed position" in either direction according to the `position of the said reversing device,

means operated by said motor to open saidv switch,means for retaining said switch in open position, dashpot controlled means for releasing said retaining means, means for moving the dashpot controlled means away from releasing positionupon opening of the switch, and means operated by said electric motor for operating said reversing device after ya predetermined number of operations of said switch.

6; In van exhibiting device, a curtain winding mechanism, a motor therefor, a switch for said motor comprising a lever and a link connected kto said lever to form a toggle, and an operating member connected to saidzlink for operating said switch by straightening said toggle, said operating member being 'connected for operation by said motor.

g a toggleh an operating member connected 'to `said linkl for operating said switch by straigthening said toggle, said operating member being connected for operation by spring means operating on said switch lever tending to move the toggle from straight position, and a movable support for for operating said switch by Copies of this patent may be obtained for from straight position,y a movable support for said spring means for reversing the throw of the switch from central position, and means operatedbv saidl motor for shifting said movable spring support. f

In testimony whereof, I have hereunto i set my hand atLos Angeles, California, this` of September, 1913. y HERMAN D. rSCI-IROEDER. In presence of-i4 V A. P.' KNIGHT,

LORRAINE E. DURnoW.

22nd day ve cents each,`by addressing the Commissioner ofPatentz, Washington, D. C. i L 

